A woman is comforted by a man near a triage tent set up for the Boston Marathon after explosions went off at the 117th Boston Marathon in Boston, Massachusetts April 15, 2013. (Photo : Reuters)

Boston Police Department confirmed via Twitter at 1:06 p.m. on Monday that two are dead and 23 are injured following bomb explosions at the finish line of the Boston Marathon.

Two explosions took place around 3 p.m., within seconds of each other, on Monday at the Boston Marathon. Boston Police Department said two explosions took place on Boyleston street near the finish line of the Boston Marathon. Officials are looking for video of the finish line to help them determine the cause or source of the explosions. Thoughts of a terrorist attack have not been confirmed by officials.

Silva was near the finish line when the explosions happened and saw "someone lost their leg," and he said, "people are crying, people are confused."

"It was just an explosion, it came out of nowhere," he said. "There are multiple injuries. I saw dismemberment, I saw blood everywhere. People are badly injured."

Massachusetts National Guard soldiers were called to the scene of the marathon, according to ABC News, and a federal law enforcement authority confirmed this was an intentional bombing, using small portable explosive devices.